Fibonacci numbers in Algol68

Example for versions Algol68g-1.18.0, Algol68toc-1.8

Analytic method 

PROC analytic fibonacci = (INT n)INT:(
  REAL sqrt 5 = sqrt(5);
  REAL p = (1 + sqrt 5) / 2;
  REAL q = 1/p;
  ENTIER( (p**n + q**n) / sqrt 5 )
);

FOR i FROM 0 TO 16 WHILE
  print(whole(analytic fibonacci(i),0));
# WHILE # i /= 16 DO
  print(", ")
OD;
print(new line)